Company lists · Data refreshed September 2026

Top 14 Corporate legal services providers based in Istanbul, Türkiye

RevenueBase identified 498 corporate legal services providers headquartered in Istanbul, Türkiye as of September 2026 and tracks 3,399 professional contacts across them, including 684 with verified work emails. Istanbul is the largest hub.

This list covers corporate legal services providers headquartered in Istanbul, Türkiye, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
498Companies
3,399Contacts tracked
684Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 14 largest corporate legal services providers based in Istanbul, Türkiye

Ranked by team size
Top 14 of 498 corporate legal services providers based in Istanbul, Türkiye, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to corporate legal services providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202651-200133 contacts →

Indirect evidence

“Balcıoğlu Selçuk Eymirlioğlu Ardıyok Keki is an Istanbul-based full-service law firm led by experienced professionals since 2007.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202651-20087 contacts →

Indirect evidence

“ELIG Gürkaynak Attorneys-at-Law is an eminent, independent Turkish law firm based in Istanbul.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202651-20081 contacts →

Partial evidence

“Ozay Law Firm provides legal services of high quality which meet with the requirements of business world.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5074 contacts →

Partial evidence

“We are a well-established eminent law firm offering a full and comprehensive range of legal services to our clients at utmost quality, with the core strength on Commercial…”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202651-20047 contacts →

Partial evidence

“A Legacy of Excellence, Strengthened by Innovation Founded in 1971 in Istanbul, Pekin & Pekin is a premier full-service law firm recognized for its pioneering legal expertise and…”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 2026201-50045 contacts →

Indirect evidence

“Arıtürk & Partners Law Office has been established by Atty.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202651-20044 contacts →

Indirect evidence

“GKC Partners is a full service independent Turkish law firm established in Istanbul, Türkiye.”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5035 contacts →

Partial evidence

“Balay, Eryiğit & Erten Attorney Partnership aims to provide high class legal services with a team specialized in its fields.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5033 contacts →

Partial evidence

“Gen Temizer Erdoğan Girgin Avukatlık Ortaklığı is a leading Turkish full service independent corporate law firm.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5031 contacts →

Indirect evidence

“2002 yılında kurulan Özsoy Hukuk ve Danışmanlık Bürosu, yerli ve yabancı şirketlere, kurumlara ve bireylere hukukun birçok alanında; talebe göre Türkçe veya İngilizce dillerinde…”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5027 contacts →

Partial evidence

“TOCC Partners (“TOCC”) is a full-service business law firm offering tailored services to domestic and multinational corporate clients, prioritising each client’s needs to their…”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5022 contacts →

Indirect evidence

“Asist Law Firm operates with a client-focused service approach and provides services in all areas of law in Istanbul.”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5018 contacts →

Partial evidence

“Cailliau & Çolakel Attorney Partnership is a leading independent business law firm based in Istanbul, advising international and domestic clients on sophisticated corporate…”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceIstanbul, TürkiyeHQ checked Sep 19, 202611-5017 contacts →

Indirect evidence

“Postacioglu Attorney Partnership is an independent and full service law firm, established in 1907.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 14 of 498 corporate legal services providers based in Istanbul, Türkiye

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 684 reachable decision-makers.

Free signup · no credit card

View the full list →

Corporate legal services providers based in Istanbul, Türkiye at a glance

As of Sep 19, 2026
20.1%Verified-email coverage
6.8Average contacts per company
1-10Median size (employees)
100.0%Largest-city concentration · Istanbul
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
340
11-50
140
51-200
16
201-500
1

Email recency for this list is measured across the whole Türkiye list rather than for Istanbul, so it is reported there. Company counts and contact totals on this page are exact for Istanbul, over 498 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among corporate legal services providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Istanbul, Türkiye whose own description of what they do matches “corporate legal services providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names corporate legal services providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among corporate legal services providers, and records with no verified work email. Companies headquartered outside Istanbul are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 684 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Corporate legal services providers by metro in Türkiye

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names corporate legal services providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many corporate legal services providers are there based in Istanbul, Türkiye?

RevenueBase identified 498 corporate legal services providers headquartered in Istanbul, Türkiye as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Balcıoğlu Selçuk Eymirlioğlu Ardıyok Keki Avukatlık Ortaklığı, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most corporate legal services providers?

Istanbul leads with 498 headquartered companies, followed by Sisli (110) and Ankara (103).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 684 verified decision-maker contacts tracked across these 498 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 498 corporate legal services providers based in Istanbul, Türkiye. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.